Javascript number placing and how to , 4 = 0.04, 14 = 0.14, 100 = 1.00

Question

I am trying to write a custom calculator but I am having trouble trying to work out a figure, I want to be able to add decimal points before the number which has been in puted.<

Answer 1

>>> [4, 14, 100].map(function(n) { return (n / 100).toFixed(2) })
["0.04", "0.14", "1.00"]